The movie depicted the use of obstetrical ultrasound. While ultrasound was first "perfected" in the late 1950s, it wasn't used in British hospitals until the 1970s and not in US hospitals until well into the 1970s, well past the setting of the movie in the 1960s.

The last scene of the movie, when the woman is looking for a gift for her daughter, there is a huge Raggedy Ann doll the camera pans past after they show the Annabelle doll. This is an homage to the real Annabelle doll, which was a Raggedy Ann doll.